| John Cena vs Reina | 18–16 | 52.94% |
| John Cena vs Bryan | 16–17 | 48.48% |
| John Cena vs Jin | 20–8 | 71.43% |
| John Cena vs Kazuya | 14–12 | 53.85% |
| John Cena vs Lili | 16–7 | 69.57% |
| John Cena vs Dragunov | 12–9 | 57.14% |
| John Cena vs Steve | 15–5 | 75.00% |
| John Cena vs Eddy | 7–11 | 38.89% |
| John Cena vs Yoshimitsu | 9–7 | 56.25% |
| John Cena vs Lee | 8–8 | 50.00% |
| John Cena vs Law | 12–3 | 80.00% |
| John Cena vs King | 4–9 | 30.77% |
| John Cena vs Lars | 5–8 | 38.46% |
| John Cena vs Feng | 6–6 | 50.00% |
| John Cena vs Hwoarang | 9–2 | 81.82% |
| John Cena vs Paul | 2–7 | 22.22% |
| John Cena vs Xiaoyu | 4–5 | 44.44% |
| John Cena vs Azucena | 5–4 | 55.56% |
| John Cena vs Nina | 4–4 | 50.00% |
| John Cena vs Jun | 4–4 | 50.00% |
| John Cena vs Alisa | 4–3 | 57.14% |
| John Cena vs Asuka | 4–2 | 66.67% |
| John Cena vs Devil Jin | 2–4 | 33.33% |
| John Cena vs Leroy | 2–4 | 33.33% |
| John Cena vs Heihachi | 4–2 | 66.67% |
| John Cena vs Fahkumram | 4–1 | 80.00% |
| John Cena vs Armor King | 3–2 | 60.00% |
| John Cena vs Leo | 4–0 | 100.00% |
| John Cena vs Raven | 2–2 | 50.00% |
| John Cena vs Clive | 0–4 | 0.00% |
| John Cena vs Jack-8 | 0–3 | 0.00% |
| John Cena vs Lidia | 1–2 | 33.33% |
| John Cena vs Miary Zo | 0–3 | 0.00% |
| John Cena vs Kuma | 2–0 | 100.00% |
| John Cena vs Zafina | 2–0 | 100.00% |
| John Cena vs Victor | 1–1 | 50.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.